fix sitemap

[dkuntze]

Please always provide the GitHub issue(s) your PR is for, as well as test URLs where your change can be observed (before and after):

Test URLs:

• Before: https://main--vg-volvotrucks-ca--hlxsites.hlx.page/
• After: https://sitemap--vg-volvotrucks-ca--hlxsites.hlx.live/

[aem-code-sync[bot]]

Hello, I'm the AEM Code Sync Bot and I will run some actions to deploy your branch and validate page speed. In case there are problems, just click a checkbox below to rerun the respective action.

• [ ] Re-run PSI checks
• [ ] Re-sync branch

Commits

* [597b49d](https://github.com/hlxsites/vg-volvotrucks-ca/commit/597b49d5e135a7ce4557e6abe317521c1bab5cdf) :arrows_counterclockwise: (latest) * [145998a](https://github.com/hlxsites/vg-volvotrucks-ca/commit/145998aaa8127f39bbbeefb4e610e01c461172c6) :white_check_mark:

[aem-code-sync[bot]]

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